Si-Wei Liu
2022-Oct-18 23:50 UTC
[PATCH v2 2/4] vdpa: pass initial config to _vdpa_register_device()
Just as _vdpa_register_device taking @nvqs as the number of queues
to feed userspace inquery via vdpa_dev_fill(), we can follow the
same to stash config attributes in struct vdpa_device at the time
of vdpa registration.
Signed-off-by: Si-Wei Liu <si-wei.liu at oracle.com>
---
drivers/vdpa/ifcvf/ifcvf_main.c | 2 +-
drivers/vdpa/mlx5/net/mlx5_vnet.c | 2 +-
drivers/vdpa/vdpa.c | 15 +++++++++++----
drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 2 +-
drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 2 +-
drivers/vdpa/vdpa_user/vduse_dev.c | 2 +-
drivers/vdpa/virtio_pci/vp_vdpa.c | 3 ++-
include/linux/vdpa.h | 3 ++-
8 files changed, 20 insertions(+), 11 deletions(-)
diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
index f9c0044..c54ab2c 100644
--- a/drivers/vdpa/ifcvf/ifcvf_main.c
+++ b/drivers/vdpa/ifcvf/ifcvf_main.c
@@ -771,7 +771,7 @@ static int ifcvf_vdpa_dev_add(struct vdpa_mgmt_dev *mdev,
const char *name,
else
ret = dev_set_name(&vdpa_dev->dev, "vdpa%u",
vdpa_dev->index);
- ret = _vdpa_register_device(&adapter->vdpa, vf->nr_vring);
+ ret = _vdpa_register_device(&adapter->vdpa, vf->nr_vring, config);
if (ret) {
put_device(&adapter->vdpa.dev);
IFCVF_ERR(pdev, "Failed to register to vDPA bus");
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c
b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 9091336..376082e 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -3206,7 +3206,7 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev,
const char *name,
mlx5_notifier_register(mdev, &ndev->nb);
ndev->nb_registered = true;
mvdev->vdev.mdev = &mgtdev->mgtdev;
- err = _vdpa_register_device(&mvdev->vdev, max_vqs + 1);
+ err = _vdpa_register_device(&mvdev->vdev, max_vqs + 1, add_config);
if (err)
goto err_reg;
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
index febdc99..566c1c6 100644
--- a/drivers/vdpa/vdpa.c
+++ b/drivers/vdpa/vdpa.c
@@ -215,11 +215,16 @@ static int vdpa_name_match(struct device *dev, const void
*data)
return (strcmp(dev_name(&vdev->dev), data) == 0);
}
-static int __vdpa_register_device(struct vdpa_device *vdev, u32 nvqs)
+static int __vdpa_register_device(struct vdpa_device *vdev, u32 nvqs,
+ const struct vdpa_dev_set_config *cfg)
{
struct device *dev;
vdev->nvqs = nvqs;
+ if (cfg)
+ vdev->vdev_cfg = *cfg;
+ else
+ vdev->vdev_cfg.mask = 0ULL;
lockdep_assert_held(&vdpa_dev_lock);
dev = bus_find_device(&vdpa_bus, NULL, dev_name(&vdev->dev),
vdpa_name_match);
@@ -237,15 +242,17 @@ static int __vdpa_register_device(struct vdpa_device
*vdev, u32 nvqs)
* callback after setting up valid mgmtdev for this vdpa device.
* @vdev: the vdpa device to be registered to vDPA bus
* @nvqs: number of virtqueues supported by this device
+ * @cfg: initial config on vdpa device creation
*
* Return: Returns an error when fail to add device to vDPA bus
*/
-int _vdpa_register_device(struct vdpa_device *vdev, u32 nvqs)
+int _vdpa_register_device(struct vdpa_device *vdev, u32 nvqs,
+ const struct vdpa_dev_set_config *cfg)
{
if (!vdev->mdev)
return -EINVAL;
- return __vdpa_register_device(vdev, nvqs);
+ return __vdpa_register_device(vdev, nvqs, cfg);
}
EXPORT_SYMBOL_GPL(_vdpa_register_device);
@@ -262,7 +269,7 @@ int vdpa_register_device(struct vdpa_device *vdev, u32 nvqs)
int err;
down_write(&vdpa_dev_lock);
- err = __vdpa_register_device(vdev, nvqs);
+ err = __vdpa_register_device(vdev, nvqs, NULL);
up_write(&vdpa_dev_lock);
return err;
}
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
index c6db1a1..5e1cebc 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
@@ -387,7 +387,7 @@ static int vdpasim_blk_dev_add(struct vdpa_mgmt_dev *mdev,
const char *name,
if (IS_ERR(simdev))
return PTR_ERR(simdev);
- ret = _vdpa_register_device(&simdev->vdpa, VDPASIM_BLK_VQ_NUM);
+ ret = _vdpa_register_device(&simdev->vdpa, VDPASIM_BLK_VQ_NUM, config);
if (ret)
goto put_dev;
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
index c3cb225..06ef5a0 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
@@ -260,7 +260,7 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev,
const char *name,
vdpasim_net_setup_config(simdev, config);
- ret = _vdpa_register_device(&simdev->vdpa, VDPASIM_NET_VQ_NUM);
+ ret = _vdpa_register_device(&simdev->vdpa, VDPASIM_NET_VQ_NUM, config);
if (ret)
goto reg_err;
diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c
b/drivers/vdpa/vdpa_user/vduse_dev.c
index 35dceee..6530fd2 100644
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -1713,7 +1713,7 @@ static int vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const
char *name,
if (ret)
return ret;
- ret = _vdpa_register_device(&dev->vdev->vdpa, dev->vq_num);
+ ret = _vdpa_register_device(&dev->vdev->vdpa, dev->vq_num,
config);
if (ret) {
put_device(&dev->vdev->vdpa.dev);
return ret;
diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c
b/drivers/vdpa/virtio_pci/vp_vdpa.c
index d448db0..ffdc90e 100644
--- a/drivers/vdpa/virtio_pci/vp_vdpa.c
+++ b/drivers/vdpa/virtio_pci/vp_vdpa.c
@@ -538,7 +538,8 @@ static int vp_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev,
const char *name,
vp_vdpa->config_irq = VIRTIO_MSI_NO_VECTOR;
vp_vdpa->vdpa.mdev = &vp_vdpa_mgtdev->mgtdev;
- ret = _vdpa_register_device(&vp_vdpa->vdpa, vp_vdpa->queues);
+ ret = _vdpa_register_device(&vp_vdpa->vdpa, vp_vdpa->queues,
+ add_config);
if (ret) {
dev_err(&pdev->dev, "Failed to register to vdpa bus\n");
goto err;
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index f1838f5..b9d50e8 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -381,7 +381,8 @@ struct vdpa_device *__vdpa_alloc_device(struct device
*parent,
int vdpa_register_device(struct vdpa_device *vdev, u32 nvqs);
void vdpa_unregister_device(struct vdpa_device *vdev);
-int _vdpa_register_device(struct vdpa_device *vdev, u32 nvqs);
+int _vdpa_register_device(struct vdpa_device *vdev, u32 nvqs,
+ const struct vdpa_dev_set_config *cfg);
void _vdpa_unregister_device(struct vdpa_device *vdev);
/**
--
1.8.3.1
Jason Wang
2022-Oct-20 05:20 UTC
[PATCH v2 2/4] vdpa: pass initial config to _vdpa_register_device()
On Wed, Oct 19, 2022 at 8:56 AM Si-Wei Liu <si-wei.liu at oracle.com> wrote:> > Just as _vdpa_register_device taking @nvqs as the number of queuesI wonder if it's better to embed nvqs in the config structure.> to feed userspace inquery via vdpa_dev_fill(), we can follow the > same to stash config attributes in struct vdpa_device at the time > of vdpa registration. > > Signed-off-by: Si-Wei Liu <si-wei.liu at oracle.com> > --- > drivers/vdpa/ifcvf/ifcvf_main.c | 2 +- > drivers/vdpa/mlx5/net/mlx5_vnet.c | 2 +- > drivers/vdpa/vdpa.c | 15 +++++++++++---- > drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 2 +- > drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 2 +- > drivers/vdpa/vdpa_user/vduse_dev.c | 2 +- > drivers/vdpa/virtio_pci/vp_vdpa.c | 3 ++- > include/linux/vdpa.h | 3 ++- > 8 files changed, 20 insertions(+), 11 deletions(-) > > diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c > index f9c0044..c54ab2c 100644 > --- a/drivers/vdpa/ifcvf/ifcvf_main.c > +++ b/drivers/vdpa/ifcvf/ifcvf_main.c > @@ -771,7 +771,7 @@ static int ifcvf_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name, > else > ret = dev_set_name(&vdpa_dev->dev, "vdpa%u", vdpa_dev->index); > > - ret = _vdpa_register_device(&adapter->vdpa, vf->nr_vring); > + ret = _vdpa_register_device(&adapter->vdpa, vf->nr_vring, config); > if (ret) { > put_device(&adapter->vdpa.dev); > IFCVF_ERR(pdev, "Failed to register to vDPA bus"); > diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c > index 9091336..376082e 100644 > --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c > +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c > @@ -3206,7 +3206,7 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name, > mlx5_notifier_register(mdev, &ndev->nb); > ndev->nb_registered = true; > mvdev->vdev.mdev = &mgtdev->mgtdev; > - err = _vdpa_register_device(&mvdev->vdev, max_vqs + 1); > + err = _vdpa_register_device(&mvdev->vdev, max_vqs + 1, add_config); > if (err) > goto err_reg; > > diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c > index febdc99..566c1c6 100644 > --- a/drivers/vdpa/vdpa.c > +++ b/drivers/vdpa/vdpa.c > @@ -215,11 +215,16 @@ static int vdpa_name_match(struct device *dev, const void *data) > return (strcmp(dev_name(&vdev->dev), data) == 0); > } > > -static int __vdpa_register_device(struct vdpa_device *vdev, u32 nvqs) > +static int __vdpa_register_device(struct vdpa_device *vdev, u32 nvqs, > + const struct vdpa_dev_set_config *cfg) > { > struct device *dev; > > vdev->nvqs = nvqs; > + if (cfg) > + vdev->vdev_cfg = *cfg; > + else > + vdev->vdev_cfg.mask = 0ULL;I think it would be nice if we can convert eni to use netlink then we don't need any workaround like this. Thanks